AD9218 Datasheet, PDF (4/24 Pages) Analog Devices – 10-Bit, 40/65/80/105 MSPS 3 V Dual A/D Converter

AD9218–SPECIFICATIONS
SWITCHING SPECIFICATIONS (VDD = 3.0 V, VD = 3.0 V; external reference, unless otherwise noted.)
Parameter
Test
Temp Level
AD9218BST-40/-65
Min Typ Max
AD9218BST-80/-105
Min Typ Max
Unit
ENCODE INPUT PARAMETERS
Maximum Encode Rate
Full
VI
Minimum Encode Rate
Full
IV
Encode Pulsewidth High (t_EH)
Encode Pulsewidth Low (t_EL)
Aperture Delay (t_A)
Aperture Uncertainty (Jitter)
Full
IV
Full
IV
25°C V
25°C V
40/65
7/6
7/6
2
3
20/20
80/105
5/3.8
5/3.8
2
3
20/20
MSPS
MSPS
ns
ns
ns
ps rms
DIGITAL OUTPUT PARAMETERS
Output Valid Time (t_V)*
Output Propagation Delay (t_PD)*
Output Rise Time (t_R)
Output Fall Time (t_F)
Out of Range Recovery Time
Full
VI
Full
VI
25°C V
25°C V
25°C V
Transient Response Time
25°C V
Recovery Time from Power-Down 25°C V
Pipeline Delay
Full
IV
3
4.5 7
1
1.2
5
5
10
5
3
4.5 6
1.0
1.2
5
5
10
5
ns
ns
ns
ns
ns
ns
Cycles
Cycles
NOTES
*t_V and t_PD are measured from the 1.5 level of the ENCODE input to the 50%/50% levels of the digital outputs swing. The digital output load during test is not to
exceed an ac load of 5 pF or a dc current of ± 40 µA. Rise and fall times measured from 10% to 90%.
Specifications subject to change without notice.
SAMPLE N
SAMPLE
N+1
A_INA,
A_INB
ENCODE
A&B
t_A
t_EH
t_EL
1/f_S
SAMPLE
N+2
SAMPLE
N+3
SAMPLE
N+5
SAMPLE
N+4
SAMPLE
N+6
D_9A–D_0A
DATA N–5
DATA N–4
DATA N–3
DATA N–2
t_PD
DATA N–1
t_V
DATA N
D_9B–D_0B
DATA N–5
DATA N–4
DATA N–3
DATA N–2
DATA N–1
DATA N
Figure 1. Normal Operation, Same Clock (S1 = 1, S2 = 0) Channel Timing
–4–
REV. 0